To follow up on our in-class discussion of the actual mortality rates of birds at the hands of various human activites, I wanted to share some extreme cases of bird kills at communications towers.
This article mentions numbers that I have seen in the literature before, but was unable to find for this post.
Note the record 30,000 birds that were killed IN ONE NIGHT.
This article discusses findings of a physician, Dr. Charles Kemper, in the 50s and 60s. The record in this article is a count of 12,000 birds killed on a single night in 1963. According to Kemper, "birds were falling at the rate of four to six a minute."
Considering the tens of thousands of communications towers in the U.S., I think that this analysis sheds a bit of context on concerns about the effect of wind turbines on bird populations.